Banca de QUALIFICAÇÃO: ROBSON JARDELLYS DE SOUZA MACIEL

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : ROBSON JARDELLYS DE SOUZA MACIEL
DATE: 23/10/2023
TIME: 09:00
LOCAL: Remoto
TITLE:

MORPHODIVERSITY OF MANDICA (Manihot esculenta Crantz) ETHNOVARIETIES IN TRADITIONAL POPULATIONS IN LOWER AMAZONAS

KEY WORDS:

Agroecology; cassava; ethnovarieties; genetics; morphology

PAGES: 47
BIG AREA: Ciências Biológicas
AREA: Genética
SUBÁREA: Genética Vegetal
SUMMARY:

The aim of this study was to evaluate the use of 5 morphological descriptors and their phenotypic classes to characterize ethnovarieties collected from 4 traditional communities in the border region of the municipalities of Juruti-PA and Parintins-AM. It is estimated that over 13,000 years ago plants began to be domesticated, cultivated and improved manually during the first agricultural activities, among which cassava (Manihot esculenta Crantz) stands out in this domestication process. A total of 27 ethnovarieties were identified and their degree of importance described by the producers over the course of two agricultural years. Based on the characterization criterion using phenotypic classes of descriptors, 7 ethnovarieties were identified and grouped into 5 races considering the morpho-agronomic descriptor for root production. The determined use of key descriptors was efficient for the characterization of ethnovarieties in the areas collected, and the validation of dominance or diversity data, using Simpson's index, validated the data collected. The importance of using key descriptors to identify ethnovarieties is efficient considering the agro-biodiversity and socio-cultural factors of each location. In this context, we emphasize that there is a need for more elaborate studies using descriptors and their phenotypic classes to develop new strategies, methodologies, techniques and technologies to help maintain ethnovarieties in traditional areas and the sustainability of the agrobiodiversity of local cassava populations in the lower Amazon region, whether to guarantee the maintenance of native species in germplasm banks in situ or ex situ.

COMMITTEE MEMBERS:
Presidente - 1835815 - LILIAN REBELLATO
Interna - ***.720.282-** - LUCIETA GUERREIRO MARTORANO - EMBRAPA
Interno - 1776327 - THIAGO ALMEIDA VIEIRA
Interna - 1446230 - LUCIANA GONCALVES DE CARVALHO
Externo ao Programa - 2142669 - MARCIO JUNIOR BENASSULY BARROS - UFOPAExterna à Instituição - MARTA REGINA SILVA PEREIRA - UEA